answersLogoWhite

0

Subjects>Math>Math & Arithmetic

What does -18 plus 21 equal?

User Avatar

Anonymous

∙ 15y ago
Updated: 9/16/2023

I think it's -39

User Avatar

Wiki User

∙ 15y ago
Copy

What else can I help you with?

Continue Learning about Math & Arithmetic

What does eighteen plus three equal?

18 + 3 = 21


What is one half plus twelve over eighteen equal?

1/2 + 12/18 = 9/18 + 12/18 = 21/18 = 7/6


Which property does 21 plus 18 equals 18 plus 21?

Commutativity or Abelian property


What is 25 plus 21 plus 19?

25 plus 21 plus 19 is equal to 65.


What does 7 plus 7 plus 7 equal?

21

Related Questions

What does 18 plus 3 equal?

-15.


What does eighteen plus three equal?

18 + 3 = 21


What is one half plus twelve over eighteen equal?

1/2 + 12/18 = 9/18 + 12/18 = 21/18 = 7/6


Which property does 21 plus 18 equals 18 plus 21?

Commutativity or Abelian property


What 21 plus 21 equal?

21 + 21 = 42.


What does -21 divided by 18 equal?

-39


What is 18 plus 3?

-21


What is 25 plus 21 plus 19?

25 plus 21 plus 19 is equal to 65.


What does --21 equal?

18


What does 18 plus 18 equal?

36


What is 16 plus 16 plus 16 plus 17 plus 18 plus 18 plus 18 plus 19 plus 19 plus 20 plus 20 plus 20 plus 21?

16 + 16 + 16 + 17 + 18 + 18 + 18 + 19 + 19 + 20 + 20 + 20 + 21 = 238


What does - 12 plus - 9 equal to?

21

Trending Questions
What is one fifth multiplied by thirty? What is 50 meters x 50 meters? 17000 is a multiple of 17 what are the next two greater multiples of 17? What is the property of a hexagonal prism? What set of numbers do negative numbers belong to? Which is the first mathematic book in Malayalam? What is 25 percent off 68.00 dollars? Which equations represent the line that is perpendicular to the line 5x 2y 6 and passes through the point (5 4)? How is 2013 written in Roman Numerals? What Is Seven Over Twenty eight Simplified? What are the center and radius of the circle described by the equation x - 52 y 42 121? How many faces edges and vertice does a prism have? How many hours did I do if I started at 335 o'clock and ended at 5? If the confidence level C increases will the margin of error decreases if we use the same sample from the same population.? What is 30 percent off 25? What is 31 5 as a simplified mixed number? What expressions represents the difference of 8 and n? What is the answer to 8 8n? How do you solve 1000 20 percent? What part of 1 kilometer is 1 meter?

Resources

Leaderboard All Tags Unanswered

Top Categories

Algebra Chemistry Biology World History English Language Arts Psychology Computer Science Economics

Product

Community Guidelines Honor Code Flashcard Maker Study Guides Math Solver FAQ

Company

About Us Contact Us Terms of Use Privacy Policy Disclaimer Cookie Policy IP Issues
Answers Logo
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.